Jill Meagher killer was on parole for rape

Even Adrian Bayley himself told police he should never have been let out of jail.

After spending a decade behind bars, the serial sex offender had been out on parole for two years when he raped and strangled Melbourne woman Jill Meagher.

"They should never have let me out," Bayley told police after confessing to killing Ms Meagher.

"How many chances does a person need?"

The 41-year-old Coburg man was on parole after serving eight years for raping five women - his second prison stint for rape - when he dragged Ms Meagher into a dark Brunswick laneway, then raped and murdered her on September 22 last year.

Bayley admitted lying in a sexual rehabilitation program to get parole the first time he was jailed for rape in the early 1990s, his plea hearing in the Victorian Supreme Court heard on Tuesday.

"I basically went through the motions and told them what they wanted to hear," he said.

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Calling for him to be jailed for life, Crown Prosecutor Gavin Silbert SC said Bayley's history of rape began at 18.

At the time of Ms Meagher's murder, Bayley had been on parole and bail, after appealing a three-month sentence for recklessly causing serious injury.

Mr Silbert said Bayley murdered Ms Meagher to silence her, knowing he would face a lengthy jail term if he was again convicted of rape.

Psychologist Professor James Ogloff said Bayley admitted he was "trying to think of a way to get out of things", even after confessing to strangling Ms Meagher.

He said Bayley, who he diagnosed with borderline personality disorder, was a violent sexual predator who fantasised about assuming a position of power and control over his victims, who he typically blamed for his crimes.

He agreed Bayley was a calculating and manipulative man who derived pleasure in inflicting pain on his victims.

The court heard Bayley had told one of his rape victims: "Now you'll do what I want you to do, if you fight, I'll fight you back" and "I could dump you in the f***ing alley and no one would give a s***".